A sleeping master has been blamed for the grounding of a cargoship off Sweden last year.
The Swedish Accident Investigation Authority (SAIA) said the captain of the 3,000-dwt Atlantic (built 1980) was sleep-deprived and had been affected by alcohol as the ship got stuck south of Oskarshamn in September.
The master was alone on the bridge at the time and has admitted nodding off.
AIS data showed no corrections were made to its course in the run-up to the incident.
The captain and another officer were arrested by police after the crash.
SAIA said the cause was shortcomings in the monitoring of navigation as a result of the captain falling asleep, as well as the absence of a look-out.
The BNWAS alarm system for watchkeeping officers on the bridge was shut down.
A contributing factor was the ship's limited crew in combination with the company's ISM giving inadequate support to the master.
Operator Venus Shipping of Denmark has been recommended to review its security and audit systems.
The hull was forced up against rocks in three places, but no pollution or injuries have been reported.
